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...wife [[Janet McNeill]]. His father was the chief engineer of the city of [[Belfast]]. His mother was a novelist and playwright who wrote more than 20 childre ...8 to 1969 and then [[Professor]] of Zoology at the [[University of Leeds]] from 1969 until his retirement in 1999, when the title of [[emeritus]] professor ...

...vironments, which can introduce errors in radiocarbon dating calculations. Scientists have identified four main sources of error: ...re external sources of carbon (such as modern pollutants or ancient carbon from fossil fuels) alter a sample’s true radiocarbon signature. ...